frank gross wrote:
Thanks for this.
I have 4 grandsons often playing together so I don’t think face recognition/registering is an option.
So just press and hold Eye AF whhich ive assigned to the AEL button
Focus mode - continuous af
Drive mode - continuous shooting hi
Yes. By the way I now also assigned eye af to few other buttons such as af-on and joystick, just in case my finger accidentally pressed a wrong button. All the buttons in the area are now eye af
And do you incorporate Center Lock-On AF for these kinds of shots ?
Fred mentioned using that on his shots of his son on a bike, if I understood him correctly.
I'm still unclear how/when combines these different features
I have tested following APS-C lenses on my camera till now:
30 macro
16 2.8 pancake
55-210
16-50 kit lens
18-55 (old kit lens which came with Nex 5)
Just a casual test but enough to tell them apart. I took handheld pictures, zoomed 100%, thats all.
16mm: This lens works like perhaps 20mm on full frame after you crop the vigneting. F8 its acceptably sharp even 5.6. F2.8 its all mushy.
55-210: Acceptable as a crop lens.
16-50: very bad soft everywhere.
30 Macro: Good sharpness. What 16 does at F8, this does an stop down.
And 18-55:
This lens is a revelation. Very sharp wide open. Very sharp stopped down. Sharp at wide and tele ends both. This is the very first Mirrorless kit lens Sony made, OSS and 3.5-5.6 lens.
I am keeping this to use it @18mp as a standard zoom instead of buying a bigger FF lens. Best part is, it us small, like 28 FE prime (200 vs 194 grams, 62x60 vs 64x60)
Not good for full frame use.
Note:
All these APSC lenses have a plastic cover with a window matching the APSC field of view, attached by 3 small screws. You can open the cover and throw it. This will give it more area than APSC. Hard vignetting will become soft.
I haven't seen a whole lot of BIF photos with the A7Riii on this thread, so first thing I did was to go for a walk at the inlet. Sure wish I had this camera for the Costa Rica trip!!
For now, I assigned memory 3 to be for BIF on bright days (allows smaller aperture for a bit more DOF) , i.e., 1/2000 sec shutter, fixed f/11 aperture, auto ISO (640 in this image), wide focus, medium fast multi-shot C-AF and +0.7EV to compensate for typical bright background (this shot was done before I changed the setting to +0.7EV).
I also assigned memory 1 as normal BIF (auto aperture and all else the same as memory 3). and memory 2 as stationary birds (1/1250 sec, auto aperture, auto ISO S-AF, small spot, single shot, -0.3 to compensate for typical dark backgrounds).
Joystick selects memory 1 for quick response to BIF.
Had great results with many pelican and osprey shots, almost all in focus (similar to my RX10M4 results earlier this year in the RX10M4 thread).
kimknapp wrote:
I haven't seen a whole lot of BIF photos with the A7Riii on this thread, so first thing I did was to go for a walk at the inlet. Sure wish I had this camera for the Costa Rica trip!!
For now, I assigned memory 3 to be for BIF on bright days (allows smaller aperture for a bit more DOF) , i.e., 1/2000 sec shutter, fixed f/11 aperture, auto ISO (640 in this image), wide focus, medium fast multi-shot C-AF and +0.7EV to compensate for typical bright background (this shot was done before I changed the setting to +0.7EV).
I also assigned memory 1 as normal BIF (auto aperture and all else the same as memory 3). and memory 2 as stationary birds (1/1250 sec, auto aperture, auto ISO S-AF, small spot, single shot, -0.3 to compensate for typical dark backgrounds).
Joystick selects memory 1 for quick response to BIF.
Had great results with many pelican and osprey shots, almost all in focus (similar to my RX10M4 results earlier this year in the RX10M4 thread).
Actually, while I was taking the shots I WAS wondering about that. Seemed fine, with the same results as when I used Speed Priority (f/8 because of the 1.4TC).
I don't remember how to check whether it dropped back to CDAF??
The pelican was moving pretty fast, but parallel to the plane of the camera.
Here's are a couple more at 100% crop (first was 994 x 1032 pixels, for example).
Slightly soft, but pretty sharp considering the speed he was traveling, distance away and using the TC.
I believe the second was focused on the body.
The third was looks pretty amazing to me, again considering the speed, the distance (100% crop) and the fact I was using the TC.
LBJ2 wrote:
Donesn't appear to work. I did a quick test with my Kmashi 15000 mAh external battery power bank and unless there is some internal setting I don't know about, the battery or a fake battery needs to remain in the camera for external power to charge the camera. I think this was the same with the A7rII. With the A7r2 I used the $20 Neewer AC Power Supply Adapter AC-PW20. Hopefully we will see something similar for the A9/A7rIII's NPFZ100 Z-series battery soon.
Curiously what is old is new again. A friend said his early digicam came with a dummy battery and cord to keep the heat down. I am a bit surprised the battery could contribute to that much heat on the sensor in a short time. Perhaps only occurs after many long exposures? BTW the manufacturer of the PW20 claims it fits the A7RIII. See the questions toward the bottom. https://tinyurl.com/y8vcy6dw
guictr wrote:
Didn't you have problems with AF? I've read that the a7R III PDAF aperture limit is f8.
Huh, the lens is f/8, it doesn’t matter if you choose an aperture of f/11 for extra DoF, the PDAF is based off the max aperture of the lens. Personally I’d just shoot at f/8, the extra DOF is small and use a higher shutter speed, 1/3200 for this sort of fats action.
Pixel Perfect wrote:
Huh, the lens is f/8, it doesn’t matter if you choose an aperture of f/11 for extra DoF, the PDAF is based off the max aperture of the lens. Personally I’d just shoot at f/8, the extra DOF is small and use a higher shutter speed, 1/3200 for this sort of fats action.
I'm sorry but I didn't understand your first sentence. Could explain it to me?
Great video over on the settings thread, felt it was worth putting the link here, too:
One of the things he points out is that the f-stop should be at least f/8 if you are using mid or high speed multi-shot. This is because it takes time for the camera to open the lens to f/8, focus and then go back to your setting if it is smaller than f/8. As he points out in the manual, at mid or high, it will only focus once at the beginning of the shots.
This explains why my slow-speed multi-shot mode got slower when I went to Manual and set the aperture to f/11.
Pixel Perfect wrote:
Personally I’d just shoot at f/8, the extra DOF is small and use a higher shutter speed, 1/3200 for this sort of fats action.
Generally I agree, but these are big birds and not super fast except when diving. Even then, they tend to move parallel to the plane of the sensor and movement is predictable.
Since they are so large, the DOF at f/8 is marginal to get the eye in focus, since the center of focus is the near end of the wing most times. f/11 gives about 50% more DOF.
I can see your point about the dive, though, since the bird is more compact and the whole bird should be in focus at wider apertures. As I think about your comment, I am wondering if the slight OOF may, in fact, be caused by movement. I'll try your suggestion next time I am at the inlet.
That all said, one thing is certain; the A7Riii appears to capture focus with BIF amazingly fast, from what I saw.
Michael Gordon wrote:
Curiously what is old is new again. A friend said his early digicam came with a dummy battery and cord to keep the heat down. I am a bit surprised the battery could contribute to that much heat on the sensor in a short time. Perhaps only occurs after many long exposures? BTW the manufacturer of the PW20 claims it fits the A7RIII. See the questions toward the bottom. https://tinyurl.com/y8vcy6dw
Hello. Thanks for the reference. Looking at this device I think the seller/reseller who wrote the dummy battery PW20 is compatible with the A7rIII might be mistaken. Their dummy battery is a duplicate for the NP-FW50 , doesn't look like this would work with the A9 or A7rIII's NPFZ100 Z battery compartment.
Either way, I'm sure its just a matter of time before these 3rd party companies/devices start offering NPFZ100 Z comparability. The a9's been out for a while so am sure somebody is working on it.
This is 100% crop, straight out of camera RAW converted to jpeg by Lightroom, taken without TC and at 1/3200 sec @ 5.6. I also took some at 1/2000 @ f/11.
I found that the faster shutter speed does help a little and removing the TC helped quite a bit. Almost all shots I took today were really sharp.
Focus was extremely quick.
Don't forget, it is a huge crop with no sharpening, in-camera or otherwise.
This image is the same shot cropped to 9 MP from the 42 MP original and with a little post-processing. The previous was only about 1.3 MP.
Kim
Edit: Just wanted to add that this one is also not sharpened in post.
And one more that I happen to like, again, absolutely no post processing other than a crop to taste (as DPReview likes to say :-) ) to about 13 MP and output by LR at 1200 pixels wide.
